Kohaku Tsukishiro

Kohaku Tsukishiro (月白琥珀 Tsukishiro Kohaku) is one of the main characters of Iroduku Sekai no Ashita kara. She is Hitomi's grandmother who sends her back to 2018 to regain her sense of color.

Relationships

 * Hitomi Tsukishiro

Hitomi is Kohaku's granddaughter, and she has transported her 60 years back to the past. She prefers Hitomi calling her by her first name during her teenage years. They are very close friends.